IONIC LIQUID-BASED ELECTROLYTE SYSTEMS FOR ENERGY STORAGE APPLICATIONS

摘要

Supercapacitors (also called electric double-layer capacitorsn(EDLCs) and lithium ion batteries (LIBs) are promising and widelynused materials for the important task of energy storage. Therefore,nboth technologies are subject of intensive research. Advantageousncharacteristics as energy and power density enable the utilization fornparticular applications. If high energy storage is required, LIBs arenthe material of choice due to their high energy-to-weight-ratio, lacknof memory effect and low discharge when in resting state.nSupercapacitors, providing a comparable lower energy density thannLIBs, have a much higher power density, can be charged andnrecharged within a few seconds and have a long cycle life of morenthan 100 000 cycles.1 As the utilization of e.g. electronic carsnbecomes more and more important in times of fuel shortage, thencombined use of LIBs and EDLCs with different and at the samentime complementary properties is of great interest.